摘要
电容器是保证电力系统电压和无功调节的重要设备,对电力系统电压稳定和电压质量都有着重要影响。针对谐波源投入导致电容器谐振加重的问题,提出一种基于KL散度法的电容器谐振和谐振源识别方法。文章首先对含有电容的谐波模型进行简化处理,将其等值为谐波源和谐波负载并联模型,其次应用KL散度根据各条支路的相关程度辨识得出变电站谐波源的位置。最后通过仿真模拟和现场测试数据验证了文章所提方法的有效性,为变电站电容谐振分析和谐波源辨识提供一种新的方法。
Capacitor is an important equipment to ensure voltage and reactive power regulation,which has important influence on voltage stability and voltage quality in power system.Aiming at the problem that the input of capacitors leads to the increase of capacitor resonance caused by the investment of harmonic source,a method of capacitor resonant harmonious vibration source identification based on KL dispersion method is proposed.Firstly,the harmonic model containing capacitance is simplified,the equivalent is harmonic source and harmonic load parallel model,and then the location of harmonic source of substation is identified by KL dispersion according to the correlation degree of each branch.Finally,the validity of the proposed method is verified by simulation simulation and field test data,which provides a new method for capacitance resonance analysis and harmonic source identification of substation.
作者
赵普志
李之洪
徐交国
程阅
路峰
Zhao Puzhi;Li Zhihong;Xu Jiaoguo;Cheng Yue;Lu Feng(State Grid Xinjiang Electric Power Limited Company,Urumqi 830000;State Grid Xinjiang Electric Power Co.,Ltd,Kui-tun Power Supply Company,Bozhou,Xinjiang 833400)
出处
《电气技术》
2020年第3期27-30,共4页
Electrical Engineering
关键词
电容器
谐振
谐波源
KL散度
capacitors
resonance
harmonic source
Kullback-Leibler(KL)divergence
作者简介
赵普志(1985-),男,本科,高级工程师,研究方向为电能质量分析和管理。
